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Finding the Fourth Proportional to 393,980.76, 543,713.72 and 240,970.95

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Solution

The fourth proportional to 393,980.76, 543,713.72 and 240,970.95 is: 332,552.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,980.76 : 543,713.72 = 240,970.95 : x
  2. Step 2: Convert to fraction form
    393,980.76/543,713.72 = 240,970.95/x
  3. Step 3: Cross multiply
    393,980.76x = 543,713.72 × 240,970.95
  4. Step 4: Simplify right side
    393,980.76x = 131,019,210,431.58
  5. Step 5: Solve for x
    x = 131,019,210,431.58/393,980.76
  6. Step 6: Final answer
    x = 332,552.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.